Ma'anar ƙamus na kalmar "atonia" ita ce rashin ko rasa sautin tsoka ko tashin hankali, yawanci a wani sashe na jiki. Hakanan yana iya komawa ga rashin daidaituwar tsoka ko rauni a cikin wata ƙungiyar tsoka. Ana amfani da Atonia sau da yawa a fannin likitanci don bayyana yanayin da ake samun asarar sautin tsoka na ɗan lokaci, kamar lokacin barci, ko kuma asarar ƙwayar tsoka ta dindindin saboda rashin lafiyan jijiyoyin jiki.